Const
DECRQM is an alias for requestMode.
Request mode (DECRQM) returns a sequence to request a mode from the terminal. The terminal responds with a report mode function DECRPM.
ANSI format:
CSI Pa $ p Copy
CSI Pa $ p
DEC format:
CSI ? Pa $ p Copy
CSI ? Pa $ p
https://vt100.net/docs/vt510-rm/DECRQM.html
DECRQM is an alias for requestMode.